Lucene search
+L

CVE-2026-74939

🗓️ 18 Aug 2026 12:23:28Reported by mozillaType 
cve
 cve
🔗 web.nvd.nist.gov👁 99 Views🌐 WEB

Privilege escalation in Firefox DOM: Navigation component, fixed in Firefox 154 and ESR versions 115.39, 140.14, 153.1.

Related
Detection
Affected
Refs
Paths
NVD
Node
OR
mozillafirefoxRange<115.39.0
mozillafirefoxRange116.0–140.14.0
mozillafirefoxRange141.0–153.1.0
mozillathunderbirdRange<140.14.0
mozillathunderbirdRange141.0–153.1.0
[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "115.39",
        "lessThanOrEqual": "115.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "140.14",
        "lessThanOrEqual": "140.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "153.1",
        "lessThanOrEqual": "153.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "154",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "140.14",
        "lessThanOrEqual": "140.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "153.1",
        "lessThanOrEqual": "153.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "154",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
RemoteTypeOverridepath/privesc.htmlPoC page that triggers a content→parent IPC path to forge a load with RemoteTypeOverride set to privilegedabout, enabling navigation into a privileged process (sandbox escape).CWE-269

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

21 Aug 2026 04:18Current
5.2Medium risk
Vulners AI Score5.2
CVSS 3.18.8
EPSS0.00454
SSVC
99